<script src="script.js"></script>
<button onclick="collect(this)">上一张</button>
<button onclick="collect(this)">下一张</button>
<button onclick="collect(this)">背景噪音</button>
<button onclick="save()">保存</button>
<pre id="count"></pre>
<button onclick="train()">训练</button>
<br><br>
监听开关：<input type="checkbox" onchange="toggle(this.checked)">